From: Stanislaw Gruszka <sgruszka@redhat.com>
Date: Mon, 19 Mar 2012 08:39:45 +0000 (+0100)
Subject: rt2x00: rt2800usb: schedule txdone work on timeout
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=b9fc106108f3faf2e4430c3bd5721677c3d6a4a1;p=openwrt%2Fstaging%2Fblogic.git

rt2x00: rt2800usb: schedule txdone work on timeout

This is fix for my current commit
ed61e2b02027935520d1be884fac0b2ffce8379a
"rt2x00: rt2800usb: rework txdone code"

We should schedule txdone work on timeout, otherwise if newer get
tx status from hardware, we will never report tx status to mac80211
and eventually never wakeup tx queue.

Reported-by: Jakub Kicinski <moorray@wp.pl>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
index cd490abced91..f97f84606f56 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/rt2x00/rt2800usb.c
@@ -163,7 +163,13 @@ static bool rt2800usb_tx_sta_fifo_read_completed(struct rt2x00_dev *rt2x00dev,
 
 		/* Reschedule urb to read TX status again instantly */
 		return true;
-	} else if (rt2800usb_txstatus_pending(rt2x00dev)) {
+	}
+
+	/* Check if there is any entry that timedout waiting on TX status */
+	if (rt2800usb_txstatus_timeout(rt2x00dev))
+		queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work);
+
+	if (rt2800usb_txstatus_pending(rt2x00dev)) {
 		/* Read register after 250 us */
 		hrtimer_start(&rt2x00dev->txstatus_timer, ktime_set(0, 250000),
 			      HRTIMER_MODE_REL);